Self-unloading receptacle.



K. BARTH.

SELF UNLOADING RECEPTACLE. APPLICATION FILED JUNE 9, I914.

1,140,563. Patented May 25, 1915.

2 SHEETS-SHEET I- THE NORRIS PETERS 50.. PHOTO-LITHQ. WASHINGTDN. D C,

K. BARTH. SELF UNLOADING. RECEPTACLE.

APPLICATION FILED JUNE 9. I914.

Patented May 25, 1915. 2 SHEETS-SHEET 2.

THE NORRIS PETERS 60., PHOTO-LITHQ, WASHINGTON, 1:1v c.

' tion representing KARL EARTH, OF ESSEN-ON-THE-RUHR, GERMANY, ASSIGNOR TO FRIED. KRUPP AKTIENGESELLSCHAFT, 0F ESSEN-ON-TH'E-RUHR, GERMANY.

SELF-UNLOADING RECEPTACL'E.

Application filed June 9,

To all whom it may concern:

Be it known that I, KARL EARTH, residing at Essen-on-the-Ruhr, Germany, a citizen of the German Empire, have invented a certain new and useful Improvement in Self-Unloading Receptacles, of which the following is a specification.

The present invention relates to self-unloading receptacles, having a rocking bottom and a shifting gear for the latter to change it from unloading to loading position.

The object of thisinvention is to provide a drive for this shifting gear which preferably is positively connected with another transmission that swings a side wall, suspended as a pendulum at the unloading side of the receptacle, and to construct this drive so that the use thereof is completely safe, and that the driving member ltself effects a safety against movement of the shifting gear in the direction of opening, when the gearing members are in the closed position, that is with the parts in the position corresponding to the loading position of the receptacle.

In the accompanying drawings is illustrated one embodiment of the present invena self-unloading car and Figure 1 shows a transverse section of the car in loading position; Fig. 2 a similar view of the car in unloading position and Figs. 3 to 6 details in larger scale.

The bottom B is revoluble around a longitudinal shaft 6 situated to one side of the center line of the car. The side wall C situated at the discharge side of the car, is

suspended pendulum wise in usual manner from the endwalls A, and is at its lower edge, provided with hooks 0*, which support the bottom B in the loading position, see Fig. 1. The opposite side wall C 1s hinged to the bottom.

The position of the shaft b has been so selected that the bottom B and the side wall C are unable to swing unaided from the unloading position illustrated in Fig. 2 into their positions corresponding to the loading position of the car as shown in Fig, 1, but will have to be brought into the position shown in Fig. 1 by hand through the cooperation of the special gearing. With this gearing is connected the bell crank drive which serves to swing the side wall G On the under frame of the car is for this pur- Specification of Letters Patent.

the unintentional Patented May 25, 1915.

1914. Serial No. 844,064.

pose mounted underneath the portion of the bottom B which lies between the shaft 6 and the side wall C, a longitudinal shaft E having several parallel crank arms E which shaft, near one of its ends, has a ratchet disk E with two abutment surfaces 6 and c situated about 90 apart. Each crank arm E is connected with the bottom B by means of a connecting link F. Near each of its ends the shaft E furthermore carries another crank arm E which is disposed at an angle of about 90 relative to the first crank arms E and is connected with the side wall C by means of a connecting rod G. Of the two connecting rods G, the one situated adjacent to the ratchet disk E and near the end attached to the crank arm E is provided with a lateral projection 9 which projection can be gripped by a corresponding lateral projection h in the final position ofthe gearing members, see Figs. 1 and 3, said projection 71. being carried by ed to revolve freely on the shaft E. The hand lever II is fork shaped at its end nearest the shaft E and grips with its two prongs 71. the ratchet disk E Between the two prongs h? a two armed awl J is mounted, the axis of revolution of which lies outside of its center of gravity so that oneof its arms is lighter than the other. The lighter arm has a toe i and the heavy one a toe '5 The toe i can cooperate with the abutment face 6 and the toe i with the abutment face 6 in such a manner that the hand lever H will be coupled with the shaft E through the cooperation of the toe i with the abutment e in the opposite direction of the arrow 00, see Figs. l and 5; and through the cooperation of the toe 2' with the abutment 6* in the direction of the arrow 00, see Fig. 6. The distance between the toes i and i is so much greater than that of the abutment faces a and e, that when the toe i of the heavier pawl arm has been disengaged from the abutment face 6 the toe i can never arrive between the abutment faces 6 and e for engagement on the ratchet disk.

In the closed position, see Figs. 1 and 3, the crank arms E and E are near that dead center position, in which the axis of revolution of the shaft E lies between the two ends of each of the connecting rods F and G and it does, in reality, deviate a small amount a hand lever H mountfrom the dead center position in the direction of the arrow m. And in fact the crank rection to arrow as pass the dead center.

earlier than the crank arm E for the connecting rod F, which will be evident from their relative positions best seen in Figs. 1 and 3. Of the crank arms E the two arms situated near the end walls A will in the closed position contact with projections a", which have been arranged on the end Walls A so that the shaft E is secured against turning in the direction of the arrow 00. If now the hand lever H simultaneously is in its locking position as represented in Figs. 1 and 3, in which position its projection k grips over the projection g of the connecting rod G, the shaft E will then also be se-, cured against turning in the opposite direction to the arrow it. With the hand lever H in the locking position, wherein it points with slight inward inclination against the horizon and, actuated by its, own weight, rests against a projection 07 arranged on the near end wall a the pawl J then lies with its toe 2' on the upper rim of the ratchet disk E the abutment faces 6 and e of the latter being situated on the under side of the ratchet disk when the crank arms E and E are in the above named position.

When the car is to be unloaded, the hand lever H is first turned about 270 from its locking position, Figs. 1 and 3, in the direction of the arrow 50, until it arrives in the position indicated in Fig. 4:. During the first 7 part of this turning, the pawl J slides with the toe 2' of its heavier arm, on the outer rim of the ratchet disk E During this part of the turning of the hand lever H, the projection 72. of this latter has simultaneously released the projection g of the nearest connecting rod Gr. As soon as the hand lever H has proceeded about half the distance of its course, the toe 2' automatically falls off actuated by gravity from the ratchet disk E and the toe i of the lighter arm of the pawl J comes now in contact with the disk E which toe finally, when the hand lever reaches the position shown in Fig. 4, grips behind the abutment face a of the ratchet disk E If now the hand lever H is turned back, that is, in opposite direction to the arrow 00, the shaft E, together with the crank arms E and E will also be turned in the same direction. When the crank arms E and E have not yet passed the dead center position, the relative position of the bottom B and the side wall C remains practicallyunchanged. But as soon as the dead center has been passed by the crank arm E the side wall 0 swings outward so that the hooks 0 will release the bottomB which in the meantime is actually being drawn downward by the rod F, that means, its end, engaged by the hooks C is being lifted on account of the crank arm E passing the dead center later than the crank arm E The position which the gearing members take-up in the moment of release of the bottom B is illustrated in Fig. 5. The bottom B no-w swings, actuated by the weight of the load, automatically into the unloading position, see Fig. 2, causing through the cooperation of the connecting rods F and crank arms E the shaft E to turn still farther in the opposite direction to the arrow at, and bringing through the cooperation of the crank arms E and rods G the sidewall C completely into its open position. I

The turning of the shaft E caused by'the V movement of the bottom B is performed with great rapidity. If the hand lever H were rigidly connected with the shaft E, the workman operating'the lever might easily be inj ured. This is impossible with the described arrangement because as soon as the angular velocity of the shaft E exceeds that of the hand lever H, the projection e is lifted'from the toe 2' so that the projection 6 can run away beneath the toe. The hand lever H can now be released immediately after the independent movement of the bottom B has begun.

When the bottom B as is shown in Fig. 2

I has reached its unloading position the gearing members E E F and G attain their positions shown in Fig. 6,-and the bottom then remains in this position in consequence of its preponderance which it possesses toward the side Wall C When at the end of the unloading operation, the bottom B is to be returned into the position shown in Fig. 1, the handlever H has first to be turned into the position shown in Fig. 6 in which the toe 2' of the ratchet disk grips behind the projection 6 so that the hand lever H is connected with the shaft E in the direction of the arrow :0. The lever H is thereupon turned in the direction of the arrow as. In the turning of the hand lever H the shaft E with the crank arms E and E now also partakes, the latter drawing the bottom B and the side walls C by means of the connecting rods F and G into the position corresponding to the loading position, see Fig. 1, in which the hooks 0 grip beneath the bottom B. As soon'as this position has been attained, the crank arm E abuts against the projection a so that a further turning in the direction of the arrow w is impossible, and the gearing members E E F and G return to their closed position, see Figs. 1 and 3. In order to make this position secure, the hand lever H is now turned, in an opposite direction to the arrow w so far back that it assumes again its locking position, see Figs. 1 and 3.

an oscillating bottom;

from the projection e of the ratchet disk E and engagement is instead made with the toe 71 As the distance between thetoes i and i is so much greater than that of the projections e and c that the toe i, when the toe i has dropped ofi, can never arrive in contact with the ratchet disk between the projections e and e the above named turnin can take place without hindrance. Toward the end of the turning the projection it of the hand lever is pushed over the projection g of the nearby connecting ro G, so that the gearing members are secured against any unintentional opening movement.

I claim 1. In a self-unloading receptacle having an operating gear for said bottom, a hand lever mounted to rock freely relative to said gear, means for locking said gear when the receptacle is in loading position, a coupling device connecting said hand lever and said gear upon the release of said locking means, subsequently disconnecting them when the bottom has started to oscillate and finally again connecting them upon the reversing of the hand lever after the unloading of the receptacle.

2. In a self-unloading receptacle having an oscillating bottom; an operating gear for said bottom comprising a rocking shaft and link connection between the bottom and the shaft; a hand lever mounted to revolve freely around said shaft; means actuated by the hand lever for locking said gear when the receptacle is in loading position, a coupling connecting said hand lever an said shaft upon the release of said locking means on the starting of the hand lever, said coupling subsequently disconnecting the hand lever and the shaft as soon as the bottom has started to open and finally again connecting them upon the reversing of the hand lever for closing the bottom.

3. In a self-unloading'receptacle'having an oscillating bottom; an operating gear for said bottom comprising a rocking shaft and link connection between the bottom and the shaft; a hand lever mounted to revolve Copies of this patent may be obtained for five cents each, by addressing the freely around said shaft; means actuated by the hand lever for locking said gear when the receptacle is in loading position, a coupling connecting said hand lever and said shaft upon the release of said locking means on the starting of the hand lever, said coupling subsequently disconnecting the hand lever and the shaft as soon as the bottom has started to open and finally again connecting them upon the reversing of the hand lever for closing the bottom; said coupling comprising two opposing shoulders on said shaft and a two armed pawl on said hand lever, one of the pawl arms constructed to engage with the one, and the other pawl arm with the other of said shoulders.

4. In a self-unloading receptacle having an oscillating bottom; an operating gear for said bottom comprising a rocking shaft and link connection between'the bottom and the shaft; a hand lever mounted to revolve freely around said shaft, means actuated by the hand lever for locking said gear when the receptacle is in loading position, a coupling connecting said hand lever and said shaft upon the release of said locking means on the starting of the hand lever, said coupling subsequently disconnecting the hand lever and the shaft as soon as the bottom has started to open and finally again connecting them upon the reversing of t e hand lever for closing the bottom; said coupling comprising two opposing shoulders on said shaft and a two armed pawl on said hand lever, one of the pawl arms constructed to engage with the one, and the other awl arm with the other of said shoulders; one of the side walls of the receptacle being mounted pendulum wise therein, a push bar attachment for operating said side wall; said locking means comprising a lug on said push rod and a flange on the hand lever constructed to engage with each other, when the parts are in loading position.

The foregoing specification signed at Barmen, Germany, this 19th day of May, 1914?- KARL EARTH. [n s.] In presence of-- HELEN NUFER, FRANCES NUFER.

Commissioner of Patents,

Washington, D. 0." 

